Catheter handle control knob



FIG. 1 is a rear perspective view of a catheter handle control knob;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top plan view;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view. 

The ornamental design for a catheter handle control knob, as shown and as described. 